Improved railway-frog



@anni @fm1 y WILLIAML NOBLE s, or ST. PAUL, MINNESOTA. Lene/rs Patat No. 82,977, daad october 13, 186s; @adored-00am 1o, 186s. i

' IMPRQVED RAILWAY-FROG.

The Schedulerefen'ed to in these Lettera Patent and making part of the'same.

To all whom-it mal/y conce/m: A y

Be it known that I, WILLIAM H. NoBLns, of St.

Paul, county of Ramsey, and State .of Minnesota,v4

have invented a new and-improved Frog for Crossings and Switches of Railways; and I do hereby declare the following tobe an eXa-ct description'thereof, reference being had to the accompanying drawings, and to the letters vof reference marked thereon, making a part of this specication. l

vThis invention isa railway-frog, constructed with a special adaptationto a wheel having two flanges and a central and two outer treads, the frog being so constructed as to support the wheel continuously on the treads during itsv passage from one track to another.

In order that those skilled in the art to which my invention pertains may be able to make and'apply the same, I will proceed to specify more fully its construction and operation.

Figure 1 showsa perspective view of my improved frog, and

Figure 2 a plain view of the same, showing the wheel in its passage. I

The same letters'refer to identical parts in both the figures.

A represents the base of-the frog, of any ordinary construction.

-B B B B are continuations of the rails of the two tracks; .and Y OC are facings, instructure and size, of substanti'ally the construction of the rail, and bent' as shown. Across the rails B B are the ordinary flange-grooves, which out one rail soas to lleave a piece, B. The facings C C are so bent and arrangedA that the bent ends lie parallel with therailsB'B, leaving betweenthefacings and the rails a space sufficient for the passage of the flanges of the Wheels. AThese facings extend only suiciently far to cover theiiange-grooves. The operation of my improved og is-'as' follows:

The Wheel of my improved construetiong-having double flanges and treble treads, `coming in thedirection with the arrow on the right-hand track, will be carried on the right-hand facing C by the outer ri'ghthand ange of the Wheel, over the ange-groove'of the right-hand rail, and to the point b. Immediately" upon leaving this point it will be supported continuously by the central piece B. and the left-hand facing,

striking the latter at a. The process is thesame fromwhatever point or direction the Wheel approaches,

this .being used only for illustration. It willthus be evident. that the wheel will pass over this frog Without` any fall or jar resulting from striking upon the anges.

It is also clear that no guard-rails are necessary. The facings C O, besides their proper function, serve to keep the wheels on the track. y f I do not coiine myself to any particular manner of making'the-frog, whether of Asolid casting, or of parts bolted or otherwise fastened together; but

What I do claim, and desire to secure4 by Letters Patent, is y A railway-og, When-constructed with the rails ,'B B, with their ange-grooves and facings C C, all arranged as described, and for the purpose set forth.l

Witnesses: Y VE.r D. MAYHEvL EDM. F. BROWN.

w. H. nonnsl l 

